BAC FXVT 288 Series Operating And Maintenance Instructions Manual page 28

1. Shut off fan(s) and pump(s).
2. Open or remove access doors and eliminators.
3. Inspect the coil surface for:
- obstructions
- damages
- corrosion
- fouling
4. After inspection, install eliminators and access doors and start pump(s) and fan(s).
Remove any obstructions from heat transfer section(s).
Any damages or corroded areas need to be repaired. Call your local BAC Balticare representative for assistance.
Minor fouling can usually be removed chemically or by temporary changes to the water treatment programme.
Contact your water treatment supplier for advice. Major fouling requires cleaning and flushing according to the
"Cleaning procedures" on page 36
Regular checking of the total aerobic bacteria count (TAB) and maintaining it within acceptable levels are the key
to prevent fouling.
WATER DISTRIBUTION
The inspection procedure is as follows:
1. Shut off the fan(s), but leave the pump(s) running.
2. Check and adjust spray pressure, if required. (not applicable for coil models with standard pumps)
3. Check to see if the nozzles are spraying consistently and producing the spray pattern shown in the figure
below.
4. Clean water distribution from dirt and debris. Ensure spray branches and nozzles are in place and clean.
Replace damaged or missing nozzles.
5. Start fan(s) and pump(s).
Nozzle spray distribution type for closed circuit cooling tower
COMBINED INLET SHIELDS
Combined inlet shields are installed at the air inlet side. These will prevent UV light from shining into the sump
water and will reduce the suction of large airborne impurities and debris. In addition, they will prevent water from
splashing out of the air intake side of the unit during fan cycling.
Inspect regularly and remove foreign objects that might impair air passage. Replace broken and missing parts
when necessary. Failure to replace broken shields will result in water loss due to splash out.
1. Unscrew turnbuckle and open tie-rod
2. Cut the plastic tie straps
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